株洲銷售程控交換機(jī) 南京德世偉業(yè)軟件技術(shù)供應(yīng)-b2b網(wǎng)站_b2b電子商務(wù)平臺【買產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content="防雷擊可采取以下措施：1．程控交換機(jī)應(yīng)有良好的工作接地和保護(hù)接地.接地電阻值應(yīng)小于3Ω..每年都應(yīng)檢測并有檢測報(bào)告..2．程控交換機(jī)各控制板和外接電纜插口處應(yīng)安裝光電隔離器..3．電話電纜的屏蔽接地線應(yīng)和保護(hù)接地極連接良好..4．是程控交換"><meta name="keywords" content="株洲銷售程控交換機(jī)"><link rel="canonical" href="http://www.cdcfah.com/"/><meta name="applicable-device" content="pc"><link rel="shortcut icon" href="/static/new_net_01/images/favicon.ico"><link rel="stylesheet" href="/static/new_net_01/css/slick.css" /><link rel="stylesheet" href="/static/new_net_01/css/addnew.css"><link rel="stylesheet" href="/static/new_net_01/css/sidenav.css"><link rel="stylesheet" href="/static/new_net_01/css/style.css" /><link rel="stylesheet" href="/static/new_net_01/css/tab.css"><link rel="stylesheet" href="/static/new_net_01/css/404.css"> <meta name="baidu-site-verification" content="OBVzrC9aaQ" /> <meta http-equiv="Cache-Control" 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href="http://www.cdcfah.com/">首頁?<a href="http://www.cdcfah.com/cp/">產(chǎn)品供應(yīng)</a>?<a href="http://www.cdcfah.com/cp/first-_txcp/">通信產(chǎn)品</a>?<a href="http://www.cdcfah.com/cp/second-txcp_csjhsb/">傳輸、交換設(shè)備</a>?<a href="http://www.cdcfah.com/cp/third-csjhsb_dhjhj/">電話交換機(jī)</a>?株洲銷售程控交換機(jī) 南京德世偉業(yè)軟件技術(shù)供應(yīng)</p><div id="ki24yi2" class="leftbox clearfix"><h1>株洲銷售程控交換機(jī) 南京德世偉業(yè)軟件技術(shù)供應(yīng)</h1><div id="ymucsy2" class="proBig"><div id="224y2ws" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UpLoadFile/2019/7/17/14/636989701226871328_njdswy_4837658.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="i4ewesi" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UpLoadFile/2019/7/17/14/636989701226871328_njdswy_4837658.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="ci4sou4" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價(jià)格要求：</span>面議</p><p><span>所在地：</span>江蘇省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>株洲銷售程控交換機(jī)</p><p><span>***更新：</span>2020-06-01 10:06:55</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="q2yo2gc" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">南京德世偉業(yè)軟件技術(shù)有限公司</a></p><p><span>聯(lián)系人：</span>李永亮</p><p><span>郵箱: </span>634765682@qq.com</p><p><span>電話: </span>13276689930</p><p><span>傳真: </span>025_84728227</p><p><span>網(wǎng)址: </span></p><p><span>手機(jī): </span>025-84728227</p><p><span>地址: </span>經(jīng)濟(jì)開發(fā)區(qū)恒盛路5號4號樓215-D室</p><p>[當(dāng)前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="e0gw44o" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="cqemciw" class="box"><p><p style="text-indent:25px">防雷擊可采取以下措施： 1．程控交換機(jī)應(yīng)有良好的工作接地和保護(hù)接地.接地電阻值應(yīng)小于3Ω..每年都應(yīng)檢測并有檢測報(bào)告.. 2．程控交換機(jī)各控制板和外接電纜插口處應(yīng)安裝光電隔離器.. 3．電話電纜的屏蔽接地線應(yīng)和保護(hù)接地極連接良好.. 4．是程控交換機(jī)供電的交流電路(從配電室到交換機(jī))應(yīng)采用屏蔽電纜.屏蔽層應(yīng)和保護(hù)接地極連接良好.. 交換機(jī)遭雷擊損壞大多由雷電天氣在網(wǎng)線上產(chǎn)生的感應(yīng)電壓經(jīng)交換機(jī)信號端口竄入機(jī)內(nèi)造成，一般的整機(jī)防雷措施如裝設(shè)避雷針、機(jī)殼接地等無法解決這個(gè)問題。一般交換機(jī)信號端口內(nèi)部都設(shè)計(jì)有防雷擊電路，可以抵抗一般的輕微雷擊，但對大型雷電產(chǎn)生的雷擊則有些力不從心。為進(jìn)一步解決信號端口引進(jìn)的雷擊問題，可以采取以下一些措施： 1，株洲銷售程控交換機(jī)、外線盡量使用鎧裝電纜，株洲銷售程控交換機(jī)，并將鎧裝層妥善接地； 2，株洲銷售程控交換機(jī)、在外線與交換機(jī)端口之間加接防雷單元，具體措施有： ①串接防雷模塊， ②串接LC吸收單元， ③并接過壓保護(hù)元件， ④串接其它防雷保護(hù)電路。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="株洲銷售程控交換機(jī)" src="http://tyunfile.71360.com/UpLoadFile/2019/7/17/14/636989701226871328_njdswy_4837658.png"></div><p style="text-indent:25px">設(shè)備功能數(shù)字程控交換機(jī) 的基本功能主要為：用戶線接入，中繼接續(xù)，計(jì)費(fèi)，設(shè)備管理等。本地交換機(jī)自動(dòng)檢測用戶的摘機(jī)動(dòng)作，給用戶的電話機(jī)回送撥號音，接收話機(jī)產(chǎn)生的脈沖信號或雙音多頻（DTMF)信號，然後完成從主叫到被叫號碼的接續(xù)（被叫號碼可能在同一個(gè)交換機(jī)也可能在不同的交換機(jī)）。在接續(xù)完成後，交換機(jī)將保持連接，直到檢測出通信的一方掛機(jī)。其中通話接續(xù)部分是利用交換機(jī)中的數(shù)字交換網(wǎng)絡(luò)，采用PCM方式實(shí)現(xiàn)數(shù)字交換的，控制部分是通過軟件由計(jì)算機(jī)來實(shí)現(xiàn)的。基本構(gòu)成電話交換機(jī)的主要任務(wù)是實(shí)現(xiàn)用戶間通話的接續(xù)。基本劃分為兩大部分：話路設(shè)備和控制設(shè)備。話路設(shè)備主要包括各種接口電路（如用戶線接口和中繼線接口電路等)和交換 (或接續(xù)）網(wǎng)絡(luò)；控制設(shè)備在縱橫制交換機(jī)中主要包括標(biāo)志器與記發(fā)器，而在程控交換機(jī)中，控制設(shè)備則為電子計(jì)算機(jī)，包括**處理器(CPU),存儲(chǔ)器和輸入 /輸出設(shè)備。程控交換機(jī)實(shí)質(zhì)上是采用計(jì)算機(jī)進(jìn)行“存儲(chǔ)程序控制”的交換機(jī)，它將各種控制功能，方法編成程序，存入存儲(chǔ)器，利用對外部狀態(tài)的掃描數(shù)據(jù)和存儲(chǔ)程序來控制，管理整個(gè)交換系統(tǒng)的工作。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="株洲銷售程控交換機(jī)" src="http://tyunfile.71360.com/UpLoadFile/2019/7/17/14/636989701226092028_njdswy_1867050.png"></div></p><br 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